Permalink
Cannot retrieve contributors at this time
Fetching contributors…
| using System.Windows.Forms; | |
| using System.Drawing; | |
| // <Snippet4> | |
| using System; | |
| using System.Text.RegularExpressions; | |
| public class RegexLib | |
| { | |
| public static bool IsValidCurrency(string currencyValue) | |
| { | |
| string pattern = @"\p{Sc}+\s*\d+"; | |
| return Regex.IsMatch(currencyValue, pattern); | |
| } | |
| } | |
| // </Snippet4> | |
| public class CurrencyForm : Form | |
| { | |
| Button OKButton; | |
| TextBox sourceCurrency; | |
| Label status; | |
| public CurrencyForm() | |
| { | |
| sourceCurrency = new TextBox(); | |
| sourceCurrency.Location = new Point(25, 50); | |
| sourceCurrency.Size = new Size(100, 25); | |
| sourceCurrency.Text = String.Empty; | |
| sourceCurrency.TextChanged += new System.EventHandler(this.sourceCurrency_TextChanged); | |
| this.Controls.Add(sourceCurrency); | |
| OKButton = new Button(); | |
| OKButton.Location = new Point(100, 150); | |
| OKButton.Size = new Size(75, 25); | |
| OKButton.Text = "OK"; | |
| OKButton.Click += new System.EventHandler(this.OKButton_Click); | |
| this.Controls.Add(OKButton); | |
| this.AcceptButton = OKButton; | |
| status = new Label(); | |
| status.Location = new Point(0, this.Height - 55); | |
| status.Size = new Size(this.Width, 25); | |
| status.BorderStyle = BorderStyle.Fixed3D; | |
| status.Anchor = AnchorStyles.Bottom; | |
| this.Controls.Add(status); | |
| } | |
| public static void Main() | |
| { | |
| Form frm = new CurrencyForm(); | |
| Application.Run(frm); | |
| } | |
| private void PerformConversion() {} | |
| public void sourceCurrency_TextChanged(object sender, EventArgs e) | |
| { | |
| status.Text = ""; | |
| } | |
| public void OKButton_Click(object sender, EventArgs e) | |
| { | |
| if (! String.IsNullOrEmpty(sourceCurrency.Text)) | |
| if (RegexLib.IsValidCurrency(sourceCurrency.Text)) | |
| PerformConversion(); | |
| else | |
| status.Text = "The source currency value is invalid."; | |
| } | |
| } |